# How do you evaluate #8+3(7-4) - (13-9)#?

##### 1 Answer

Jun 9, 2015

13

#### Explanation:

Let use the principle of PEMDAS. If the expression consists of parenthesis, exponents, +, –, × and ÷, then the operations MUST be performed in the following order.

Always work on the calculations within parenthesis first if any.

Next, calculate the exponents.Then, carry out multiplication or division, working from left to right.Lastly, do addition or subtraction, working from left to right.

We will first solve the parenthesis

8 + 3 (7-4) - (13-9)

8 + 3 (3) - (4)

8 +9 -4

17-4 = 13